Electromyographic Analysis of Masticatory Muscles in Cleft Lip and Palate Children with Pain-Related Temporomandibular Disorders.

ABSTRACT: Aim:The aim of this study was to assess the electrical activity of temporalis and masseter muscles in children with cleft lip and palate (CLP) and pain-related temporomandibular disorders (TMD-P). Methods:The sample consisted of 31 CLP patients with a TMD-P (mean age 9.5?±?1.8 years) and 32 CLP subjects with no TMD (mean age 9.2?±?1.7 years). The children were assessed for the presence of temporomandibular disorders (TMD) using Axis I of the Research Diagnostic Criteria for TMD (RDC/TMD). Electromyographical (EMG) recordings were performed using a DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) in the mandibular rest position and during maximum voluntary contraction (MVC). Results:The rest activity of the temporalis and masseter muscles was significantly higher in TMD-P group compared with non-TMD children. A significant decrease in temporalis muscle activity during MVC was observed in TMD-P patients. There was a significant increase in the Asymmetry Index for temporalis and masseter muscle rest activity in the TMD-P group. Conclusion:Cleft children diagnosed with TMD-P have altered masticatory muscle activity, and this can affect their muscle function.

SUBMITTER: Szyszka-Sommerfeld L 

PROVIDER: S-EPMC5971269 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature